<template>
    <div>
    <!-- 面包屑导航区 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>活动管理</el-breadcrumb-item>
            <el-breadcrumb-item>活动列表</el-breadcrumb-item>
            <el-breadcrumb-item>活动详情</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区 -->
        <el-card>
            <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户按钮</el-button>
                </el-col>
            </el-row>
            <!-- 用户列表区域 -->
            <el-table :data="userlist" border stripe>\
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态" prop="mg_state" >
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)" ></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色按钮 -->
                        <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                             <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>   
                    </template>
                </el-table-column>
            </el-table>
            <!-- 分页区域 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>
        </el-card>
        <!-- 添加用户对话框 -->
        <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%" @close="addDialogClosed">
        <!-- 内容主体区域 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机号" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>    
            </el-form>
        <!-- 底部区 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 修改用户的对话框 -->
        <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%" @close="editDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop= "email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="editForm.mobile" ></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 分配角色的对话框 -->
        <el-dialog
        title="分配角色"
        :visible.sync="setRolesDialogVisible"
        width="50%" @close="setRoleDialogClosed">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                <p>当前用户：{{userInfo.username}}</p>
                <p>当前角色：{{userInfo.rolename}}</p>
                <p>分配新角色：
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option
                        v-for="item in rolesList"
                        :key="item.id"
                        :label="item.roleName"
                        :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data(){
        // 验证邮箱校验规则
        var checkEmail = (rule, value, cb)=>{
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
            if(regEmail.test(value)){
                return cb()
            }
            cb(new Error('请输入合法邮箱'))
        };
        // 手机号邮箱验证规则
        var checkMobile = (rule, value, cb)=>{
            const regMobile = /^(13[0-9]|14[01456879]|15[0-35-9]|16[2567]|17[0-8]|18[0-9]|19[0-35-9])\d{8}$/; 
            if(regMobile.test(value)){
                return cb()
            }
            cb(new Error('请输入合法的手机号'))
        };

        return {
            queryInfo: {
                query:'',
                // 当前页数
                pagenum: 1,
                // 当前每页显示多少数据
                pagesize: 2
            },
            userlist: [],
            total: 0,
            //控制添加用户对话框的显示与隐藏
            addDialogVisible: false,
            //添加用户的表单数据
            addForm: {
                username: '',
                password: '',
                email: '',
                mobile: '',
            },
            // 添加用户的表单验证规则
            addFormRules: {
                username: [
                    {required: true, message:'请输入用户名', trigger: 'blur'},
                    { min: 3, max: 10, message: '用户名长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                password:[
                    {required: true, message:'请输入用户密码', trigger: 'blur'},
                    { min: 3, max: 10, message: '密码长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                email: [
                    {required: true, message:'请输入邮箱', trigger: 'blur'},
                    {validator: checkEmail, trigger: 'blur'}
                ],
                mobile:[
                    {required: true, message:'请输入手机号', trigger: 'blur'},
                    {validator: checkMobile, trigger: 'blur' }
                ]
            },
            // 控制修改对话框的显示与隐藏
            editDialogVisible: false,
            // 查询到的用户对象保存
            editForm: {

            },
            editFormRules: {
                email: [
                    { require: true, message:'请输入用户邮箱', trigger: 'blur'},
                    { validator: checkEmail, trigger: 'blur',}
                ],
                mobile: [
                    { require: true, message:'请输入用户手机', trigger: 'blur'},
                    { validator: checkMobile, trigger: 'blur',}
                ]
            },
            // 控制角色分配对话框可视
            setRolesDialogVisible: false,
            // 需要被分配角色的用户信息
            userInfo: '',
            // 所有角色的数据列表
            rolesList: '',
            // 已选中的角色ID值
            selectedRoleId: '',
        }
    },
    created() {
        this.getUserList()
    },
    methods:{
        async getUserList(){
           const {data: res} = await this.$http.get('users', {
               params: this.queryInfo})
            if(res.meta.status !== 200) return this.$message.error('获取用户列表失败');
            this.userlist = res.data.users
            this.total = res.data.total
            console.log(res)
        },
        // 监听pagesize
        handleSizeChange(newSize){
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        // 监听页码值改变的事件
        handleCurrentChange(newPage){
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        // 监听switch状态改变
        async userStateChanged(userinfo){
            const {data:res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            if(res.meta.status !== 200) {
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error('用户更新失败！');
            }
            else{
                this.$message.success('用户更新成功！')
            }
        },
        // 监听添加用户对话框关闭事件
        addDialogClosed() {
            this.$refs.addFormRef.resetFields()
        },
        // 点击按钮添加新用户
        addUser() {
            this.$refs.addFormRef.validate( async valid => {
                if(!valid) return
                // 可以发起添加用户的请求
                const {data: res} = await this.$http.post('users', this.addForm)
                if(res.status !== 201) {
                    this.$message.error('添加用户失败')
                }
                this.$message.success('添加用户成功')
                this.addDialogVisible = false
                this.getUserList()
            })
        },
        // 展示用户编辑的对话框
        async showEditDialog(id) {
            const {data: res} = await this.$http.get('users/' + id)
            if(res.meta.status !== 200){
                return this.$message.error('查询用户信息失败！')
            } 
            this.editForm = res.data;
            this.editDialogVisible = true;
            
        },
        // 监听修改用户对话框的关闭事件
        editDialogClosed() {
            this.$refs.editFormRef.resetFields()
        },
        // 修改用户信息并提交
        editUserInfo(){
              this.$refs.editFormRef.validate(async valid =>{
                if(!valid) return
                // 发起用户信息请求
                const {data:res} = await this.$http.put('users/' +this.editForm.id,{
                    email: this.editForm.email,
                    mobile: this.editForm.mobile
                })

                if(res.meta.status !==200){
                    return this.$message.error('更新用户信息失败')
                }
                // 关闭对话框
                this.editDialogVisible = false
                // 刷新数据列表
                this.getUserList()
                // 提示修改成功
                this.$message.success('更新用户信息成功')
            })
        },
        async removeUserById(id) {
            // 弹框询问是否删除数据
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }).catch(err => err)
            // 确认删除返回值为字符串 confirm
            // 取消删除返回字符串为 cancel
            if(confirmResult!=='confirm'){
                return this.$message.info('已取消删除')
            }
            // 删除用户信息
            const {data: res} = await this.$http.delete('users/' + id)
            if(res.meta.status !==200) {
                return this.$message.error('用户删除失败')
            }
            this.$message.success('用户删除成功')
            this.getUserList()
        },
        // 展示分配角色对话框
        async setRole(userInfo) {
            this.userInfo = userInfo
            // 在展示对话框之前获取角色列表
            const {data:res} = await this.$http.get('roles')
            if(res.meta.status !== 200) {
                return this.$message.error('角色列表获取失败')
            }
            this.rolesList = res.data

            this.setRolesDialogVisible = true
        },
        // 点击按钮分配角色
        async saveRoleInfo() {
            if(!this.selectedRoleId) {
                return this.$message.error('请选择要分配的角色')
            }
            const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`, {
                rid: this.selectedRoleId
            })
            if(res.meta.status !== 200){
                return this.$message.error('角色分配失败')
            }
            this.$message.success('角色分配成功')
            this.getUserList()
            this.setRolesDialogVisible = false
        },
        // 监听分配页面关闭
        setRoleDialogClosed(){
            this.selectedRoleId = ''
            this.userInfo = ''
        }
    }
}
</script>

<style lang="less" scoped>

</style>